CVE-2022-21122: Metacalc Code Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-5gc4-cx9x-9c43
Share
CVSS 9.0
CWE-94
Published
Advisory Summary

CVE-2022-21122 is a CRITICAL (CVSS 9.0) code injection vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Metacalc libraries in the npm ecosystem. The issue involves code injection in metacalc. Remediation is available by upgrading affected packages to version 0.0.2.

CVE-2022-21122 at a Glance

CVE Identifier CVE-2022-21122
GHSA Identifier GHSA-5gc4-cx9x-9c43
Severity CRITICAL
CVSS v3.1 Base Score 9.0
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Metacalc
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-21122

To remediate this vulnerability, upgrade all affected Metacalc dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

metacalc fixed: 0.0.2 
npm install metacalc@0.0.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls metacalc

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2022-21122, inspect your project dependencies using npm:

npm ls metacalc

Analyze the terminal output to locate any version of Metacalc in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.2), your application is affected.

Note: The npm ls metacalc command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Metacalc, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

The package metacalc before 0.0.2 is vulnerable to Arbitrary Code Execution when it exposes JavaScript's Math class to the v8 context. As the Math class is exposed to user-land, it can be used to get access to JavaScript's Function constructor.

CVE-2022-21122 Affected Metacalc Versions

1 component(s)
Fixed Versions:
0.0.2
Product / Package Ecosystem Affected Versions Fixed Version
metacalc
npm/metacalc
npm
< 0.0.2
0.0.2

References

NVD — CVE-2022-21122 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-21122
Metacalc Source Repository REPOSITORY
https://github.com/metarhia/metacalc/pull/16
Security Fix Commit FIX COMMIT
https://github.com/metarhia/metacalc/commit/625c23d63eabfa16fc815f5832b147b08d2144bd
Metacalc Source Repository REPOSITORY
https://github.com/metarhia/metacalc
snyk.io/vuln/snyk-js-metaca... WEB
https://snyk.io/vuln/SNYK-JS-METACALC-2826197

Frequently Asked Questions

What is CVE-2022-21122?
CVE-2022-21122 is a security vulnerability in Metacalc involving Code Injection in metacalc under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Metacalc versions are affected?
Affected versions include releases prior to 0.0.2 across affected packages: metacalc.
What version fixes CVE-2022-21122?
Upgrading to 0.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is metacalc affected?
Yes, metacalc is affected in releases prior to 0.0.2. Upgrade your dependency to 0.0.2 or later.
What is the CVSS score of CVE-2022-21122?
CVE-2022-21122 has a CVSS v3.1 base score of 9.0 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2022-21122?
CVE-2022-21122 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check npm dependencies for CVE-2022-21122?
Run the dependency tree command: 'npm ls metacalc'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-5gc4-cx9x-9c43",
  "modified" : "2022-06-20T22:01:28Z",
  "published" : "2022-06-09T00:00:29Z",
  "aliases" : [ "CVE-2022-21122" ],
  "summary" : "Code Injection in metacalc",
  "details" : "The package metacalc before 0.0.2 is vulnerable to Arbitrary Code Execution when it exposes JavaScript's Math class to the v8 context. As the Math class is exposed to user-land, it can be used to get access to JavaScript's Function constructor.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "metacalc"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-21122"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/metarhia/metacalc/pull/16"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/metarhia/metacalc/commit/625c23d63eabfa16fc815f5832b147b08d2144bd"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/metarhia/metacalc"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-METACALC-2826197"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-09T23:50:50Z",
    "nvd_published_at" : "2022-06-08T09:15:00Z"
  }
}